    * {
        margin: 0;
        padding: 0
    }

    html,
    body {
        width: 100%;
        height: 100%;
    }

    .box {
        width: 100%;
        height: 50px;
        text-align: center;
        line-height: 50px;
        font-family: Microsoft Yahei;
    }

    .sum {
        display: flex;
        height: 100%;
        width: 100%;
        position: relative
    }

    .box2 {
        height: 100%;
        width: 100%;
        background-image: url("./腾讯会议图片_20221204154725.jpg");
        background-size: cover;
        background-position: center
    }

    .text {
        position: absolute;
        color: white;
        font-size: 30px;
        font-weight: bold;
        left: 76px;
        bottom: 144px;
        animation: txt 1s forwards
    }

    .logindiv {
        width: 105px;
        height: 40px;
        border-radius: 20px;
        background-color: white;
        position: absolute;
        right: 20px;
        top: 20px;
        display: flex;
        justify-content: space-around
    }

    .logindiv1 {
        width: 16px;
        height: 20px;
        margin-top: 10px;
        margin-left: 11px;
    }

    .logindiv2 {
        width: 1px;
        height: 25px;
        background-color: black;
        margin-top: 8px;
    }

    .logindiv3 {
        width: 28px;
        height: 20px;
        margin-top: 11px;
        margin-right: 10px;
        font-size: 14px;
    }

    @keyframes txt {
        0% {
            opacity: 0;
            transform: translateY(0px) scale(0.8)
        }

        25% {
            opacity: 0.6;
            transform: translateY(50px) scale(0.85)
        }

        100% {
            opacity: 1;
            transform: translateY(10px) scale(1.2)
        }
    }